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	     |     Dermatologie > Dermatosen unklarer oder polyätiologischer Genese > Perforierende Dermatosen  | 
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	     Hyperkeratosis follicularis et parafollicularis 
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| Differentialdiagnosen | ||
1.  | 
	 reaktive perforierende Kollagenose  | 
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2.  | 
	 perforierende Follikulitis  | 
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3.  | 
	 Elastosis perforans serpiginosa  | 
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4.  | 
	 Hyperkeratosis lenticularis perstans  | 
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